Abstract
Efforts to broaden and improve the genetic stock from which horticultural material of Kalanchoe (Crassulaceae subfam. Kalanchooideae) is made available globally are on-going. Apart from making small, light-weight, highly floriferous material—both single- and double-flowered—available to the in- and outdoor plant trades, work is also underway to select Kalanchoe material that can be sold as long-lasting cut flowers. Material derived from K. lubangensis × K. sexangularis, here described as K. ×forbesiae, shows promise as a source of cut flowers.
References
Adanson, M. (1763) Familles des Plantes. Seconde Partie. Etat actuel de la Botanike. Chez Vincent, Imprimeur-Libraire de M<sup>gt</sup> le Comte de Provence, Paris, 640 pp. [https://www.biodiversitylibrary.org/item/6958#page/794/mode/1up]
Baker, J.G. (1881 [21 February]) Notes on a collection of flowering plants made by L. Kitching, Esq., in Madagascar in 1879 (Plates VII. & VIII.). Journal of the Linnean Society, Botany 18: 264–281. [https://www.biodiversitylibrary.org/item/8373#page/271/mode/1up]
Brown, N.E. (1913) 1436. Kalanchoe sexangularis, N. E. Brown [Crassulaceae]. In: Diagnoses Africanae LIII. Bulletin of Miscellaneous Information, Kew 1913 (3): 118–123. [https://www.biodiversitylibrary.org/item/43726#page/125/mode/1up]
Fernandes, R.B. (1980) Notes sur quelques espèces du genre Kalanchoe Adans. Boletim da Sociedade Broteriana (série 2.<sup>a</sup>) 53: 325–442.
Forbes, H. (1941) Kalanchoe albiflora H. Forbes, sp. nov., pp. 37–39. In: Anonymous, Newly described species and new combinations. Bothalia 4: 37–41, + plate on p. 39. [https://archive.org/details/bothaliavolume404unse/page/36/mode/2up]
Gunn, M. & Codd, L.E.[W.]. (1981) Botanical exploration of southern Africa. An illustrated history of early botanical literature on the Cape flora. Biographical accounts of the leading plant collectors and their activities in southern Africa from the days of the East India Company until modern times. A.A. Balkema, Cape Town, 400 pp.
Hamet, R. (1908) Kalanchoe luciae sp. nov. Bulletin de l’Herbier Boissier, sér. 2, 8: 254–257. [https://www.biodiversitylibrary.org/item/104945#page/290/mode/1up]
Harvey, W.H. (1862) Order LIII. Crassulaceae, D.C. VIII. Kalanchoe, Adans. In: W.H. Harvey & O.W. Sonder, Flora capensis [being a systematic description of the plants of the Cape Colony, Caffraria, & Port Natal] 2. L. Reeve & Co., Ltd, Kent, pp. 378–380. [https://www.biodiversitylibrary.org/item/15233#page/386/mode/1up]
IPNI. (2021 [continuously updated]) The International Plant Names Index. Available from: https://www.ipni.org/ (accessed 2021)
Koorders, S.H. (1919 [Mai] [24 October 1918]) Beitrag zur Kenntniss der Flora von Java No. 18. Beschreibung von Kalanchoë Schumacheri vom Idjen-Plateau und Revision der Crassulaceae von Java. (Mit 2 lithographischen Tafeln.). Bulletin du Jardin Botanique de Buitenzorg sér. 3, 1 (3): 169–180, Figures 14 and 15. [https://www.biodiversitylibrary.org/item/27173#page/205/mode/1up (text); https://www.biodiversitylibrary.org/item/27173#page/243/mode/1up (figures)]
Kroon, G.H., De Jong, J. & Van Raamsdonk, L.W.D. (1989) Evaluation of the genus Kalanchoe for breeding of new cutflowers and potplants. Acta Horticulturae (International Symposium on the Development of New Floricultural Crops) 252: 111–116. https://doi.org/10.17660/ActaHortic.1989.252.14
Raymond-Hamet. (1933) Observations sur le Kalanchoe uniflora (Stapf) Raymond-Hamet. Bulletin de la Société Botanique de France 80 (4): 542–548. https://doi.org/10.1080/00378941.1933.10833878
Salisbury, R.A. (1805 [1 June 1805]) The Paradisus Londinensis: or coloured figures of plants cultivated in the vicinity of the metropolis 1. Published by William Hooker, No. 6, Frith Street, city not stated, presumably London, 157 pp. & 117 plates. https://doi.org/10.5962/bhl.title.53520
Smith, G.F. (2020a) Kalanchoe Adans. subg. Fernandesiae Gideon F.Sm. (Crassulaceae subfam. Kalanchooideae), a new subgenus from southern and south-tropical Africa. Haseltonia 27: 2–7. https://doi.org/10.2985/026.027.0101
Smith, G.F. (2020b) Character inheritance in Kalanchoe ‘Vivien’ Bischofberger (Crassulaceae subfam. Kalanchooideae), a cultivar derived from an interspecific hybrid between two southern African species (K. luciae Raym.-Hamet × K. sexangularis N.E.Br.). Bradleya 38: 3–13. https://doi.org/10.25223/brad.n38.2020.a1
Smith, G.F. (2020c) Kalanchoe ×estrelae (Crassulaceae subfam. Kalanchooideae): a new nothospecies for the hybrid between K. luciae and K. sexangularis. Phytotaxa 441 (2): 225–228. https://doi.org/10.11646/phytotaxa.441.2.11
Smith, G.F. (2021) Reinstatement of Kalanchoe [subg. Bryophyllum] sect. Alatae (Crassulaceae subfam. Kalanchooideae) for K. porphyrocalyx and K. uniflora, two Madagascan endemics. Bradleya 39: 177–181. https://doi.org/10.25223/brad.n39.2021.a17
Smith, G.F. & Figueiredo, E. (2018) The infrageneric classification and nomenclature of Kalanchoe Adans. (Crassulaceae), with special reference to the southern African species. Bradleya 36: 162–172. https://doi.org/10.25223/brad.n36.2018.a10
Smith, G.F., Figueiredo, E., Loureiro, J. & Crouch, N.R. (2019b) Kalanchoe ×gunniae Gideon F.Sm & Figueiredo (Crassulaceae), a new South African nothospecies derived from Kalanchoe paniculata Harv. × Kalanchoe sexangularis N.E.Br. Bradleya 37: 141–150. https://doi.org/10.25223/brad.n37.2019.a9
Smith, G.F., Figueiredo, E. & Van Wyk, A.E. (2019a) Kalanchoe (Crassulaceae) in southern Africa. Classification, biology, and cultivation. Academic Press, an imprint of Elsevier, London, San Diego, Cambridge (USA), and Oxford, 328 pp.
Smith, G.F., Klein, D.-P. & Shtein, R. (2021b) A revision of the Malagasy Kalanchoe subg. Kitchingia (Crassulaceae subfam. Kalanchooideae): history, taxonomy, and nomenclature. Phytotaxa 507 (1): 67–80. https://doi.org/10.11646/phytotaxa.507.1.3
Smith, G.F., Shtein, R. & Klein, D.-P. (2021a) Kalanchoe subg. Alatae (Crassulaceae subfam. Kalanchooideae), a new rank for K. sect. Alatae. Phytotaxa 509 (2): 255–258. https://doi.org/10.11646/phytotaxa.509.2.9
Thiers, B. (2021 [continuously updated]) Index herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/ih/ (accessed 2021)
Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Koeltz Botanical Books, Oberreifenberg. [Regnum Vegetabile 159], 254 pp. https://doi.org/10.12705/Code.2018
Von Poellnitz, [J.]K.[L.A.]. (1934) XV. Kalanchoe Blossfeldiana. Repertorium specierum novarum regni vegetabilis. Centralblatt für Sammlung und Veröffentlichung von Einzeldiagnosen neuer Pflanzen 35: 159–160. [http://bibdigital.rjb.csic.es/ing/Libro.php?Libro=6015]
Baker, J.G. (1881 [21 February]) Notes on a collection of flowering plants made by L. Kitching, Esq., in Madagascar in 1879 (Plates VII. & VIII.). Journal of the Linnean Society, Botany 18: 264–281. [https://www.biodiversitylibrary.org/item/8373#page/271/mode/1up]
Brown, N.E. (1913) 1436. Kalanchoe sexangularis, N. E. Brown [Crassulaceae]. In: Diagnoses Africanae LIII. Bulletin of Miscellaneous Information, Kew 1913 (3): 118–123. [https://www.biodiversitylibrary.org/item/43726#page/125/mode/1up]
Fernandes, R.B. (1980) Notes sur quelques espèces du genre Kalanchoe Adans. Boletim da Sociedade Broteriana (série 2.<sup>a</sup>) 53: 325–442.
Forbes, H. (1941) Kalanchoe albiflora H. Forbes, sp. nov., pp. 37–39. In: Anonymous, Newly described species and new combinations. Bothalia 4: 37–41, + plate on p. 39. [https://archive.org/details/bothaliavolume404unse/page/36/mode/2up]
Gunn, M. & Codd, L.E.[W.]. (1981) Botanical exploration of southern Africa. An illustrated history of early botanical literature on the Cape flora. Biographical accounts of the leading plant collectors and their activities in southern Africa from the days of the East India Company until modern times. A.A. Balkema, Cape Town, 400 pp.
Hamet, R. (1908) Kalanchoe luciae sp. nov. Bulletin de l’Herbier Boissier, sér. 2, 8: 254–257. [https://www.biodiversitylibrary.org/item/104945#page/290/mode/1up]
Harvey, W.H. (1862) Order LIII. Crassulaceae, D.C. VIII. Kalanchoe, Adans. In: W.H. Harvey & O.W. Sonder, Flora capensis [being a systematic description of the plants of the Cape Colony, Caffraria, & Port Natal] 2. L. Reeve & Co., Ltd, Kent, pp. 378–380. [https://www.biodiversitylibrary.org/item/15233#page/386/mode/1up]
IPNI. (2021 [continuously updated]) The International Plant Names Index. Available from: https://www.ipni.org/ (accessed 2021)
Koorders, S.H. (1919 [Mai] [24 October 1918]) Beitrag zur Kenntniss der Flora von Java No. 18. Beschreibung von Kalanchoë Schumacheri vom Idjen-Plateau und Revision der Crassulaceae von Java. (Mit 2 lithographischen Tafeln.). Bulletin du Jardin Botanique de Buitenzorg sér. 3, 1 (3): 169–180, Figures 14 and 15. [https://www.biodiversitylibrary.org/item/27173#page/205/mode/1up (text); https://www.biodiversitylibrary.org/item/27173#page/243/mode/1up (figures)]
Kroon, G.H., De Jong, J. & Van Raamsdonk, L.W.D. (1989) Evaluation of the genus Kalanchoe for breeding of new cutflowers and potplants. Acta Horticulturae (International Symposium on the Development of New Floricultural Crops) 252: 111–116. https://doi.org/10.17660/ActaHortic.1989.252.14
Raymond-Hamet. (1933) Observations sur le Kalanchoe uniflora (Stapf) Raymond-Hamet. Bulletin de la Société Botanique de France 80 (4): 542–548. https://doi.org/10.1080/00378941.1933.10833878
Salisbury, R.A. (1805 [1 June 1805]) The Paradisus Londinensis: or coloured figures of plants cultivated in the vicinity of the metropolis 1. Published by William Hooker, No. 6, Frith Street, city not stated, presumably London, 157 pp. & 117 plates. https://doi.org/10.5962/bhl.title.53520
Smith, G.F. (2020a) Kalanchoe Adans. subg. Fernandesiae Gideon F.Sm. (Crassulaceae subfam. Kalanchooideae), a new subgenus from southern and south-tropical Africa. Haseltonia 27: 2–7. https://doi.org/10.2985/026.027.0101
Smith, G.F. (2020b) Character inheritance in Kalanchoe ‘Vivien’ Bischofberger (Crassulaceae subfam. Kalanchooideae), a cultivar derived from an interspecific hybrid between two southern African species (K. luciae Raym.-Hamet × K. sexangularis N.E.Br.). Bradleya 38: 3–13. https://doi.org/10.25223/brad.n38.2020.a1
Smith, G.F. (2020c) Kalanchoe ×estrelae (Crassulaceae subfam. Kalanchooideae): a new nothospecies for the hybrid between K. luciae and K. sexangularis. Phytotaxa 441 (2): 225–228. https://doi.org/10.11646/phytotaxa.441.2.11
Smith, G.F. (2021) Reinstatement of Kalanchoe [subg. Bryophyllum] sect. Alatae (Crassulaceae subfam. Kalanchooideae) for K. porphyrocalyx and K. uniflora, two Madagascan endemics. Bradleya 39: 177–181. https://doi.org/10.25223/brad.n39.2021.a17
Smith, G.F. & Figueiredo, E. (2018) The infrageneric classification and nomenclature of Kalanchoe Adans. (Crassulaceae), with special reference to the southern African species. Bradleya 36: 162–172. https://doi.org/10.25223/brad.n36.2018.a10
Smith, G.F., Figueiredo, E., Loureiro, J. & Crouch, N.R. (2019b) Kalanchoe ×gunniae Gideon F.Sm & Figueiredo (Crassulaceae), a new South African nothospecies derived from Kalanchoe paniculata Harv. × Kalanchoe sexangularis N.E.Br. Bradleya 37: 141–150. https://doi.org/10.25223/brad.n37.2019.a9
Smith, G.F., Figueiredo, E. & Van Wyk, A.E. (2019a) Kalanchoe (Crassulaceae) in southern Africa. Classification, biology, and cultivation. Academic Press, an imprint of Elsevier, London, San Diego, Cambridge (USA), and Oxford, 328 pp.
Smith, G.F., Klein, D.-P. & Shtein, R. (2021b) A revision of the Malagasy Kalanchoe subg. Kitchingia (Crassulaceae subfam. Kalanchooideae): history, taxonomy, and nomenclature. Phytotaxa 507 (1): 67–80. https://doi.org/10.11646/phytotaxa.507.1.3
Smith, G.F., Shtein, R. & Klein, D.-P. (2021a) Kalanchoe subg. Alatae (Crassulaceae subfam. Kalanchooideae), a new rank for K. sect. Alatae. Phytotaxa 509 (2): 255–258. https://doi.org/10.11646/phytotaxa.509.2.9
Thiers, B. (2021 [continuously updated]) Index herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/ih/ (accessed 2021)
Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Koeltz Botanical Books, Oberreifenberg. [Regnum Vegetabile 159], 254 pp. https://doi.org/10.12705/Code.2018
Von Poellnitz, [J.]K.[L.A.]. (1934) XV. Kalanchoe Blossfeldiana. Repertorium specierum novarum regni vegetabilis. Centralblatt für Sammlung und Veröffentlichung von Einzeldiagnosen neuer Pflanzen 35: 159–160. [http://bibdigital.rjb.csic.es/ing/Libro.php?Libro=6015]